Spark-arrester.



F. E. YOUNG & C. A. BRAGG.

SPARK ARRESTER. APPLICATION FILED JUNE 28, 1912 m A1 0 0, m d A v m 14 mu: 3 6

unrrnn erases PATENT canton.

FRANK E. YOUNG- AND CHARLIE A. BRAGCT, OF LOOMIS, NEBRASKA.

SPARX-ARRESTER.

Specification of Letters Patent.

Patented Feb.10, 1914..

npplicaticzifiledjun'e 28, 1912. Serial No. 706,433.

willenable others skilled in the art to which it appertains to make anduse the Seine;

.This invention relates to spark ar'resters n'd'shas for its object toprovide a spark arroster-which may be secured upon a smoke stack of alocomotiv'e' or other engine to prevent the escape of sparks from theupper end of the stack.

Another object is'to provide a spark arrester having a vane-pro ectingtherefrom so that? the arrester will be properly turned by the a rcurrents to position the screened portion thereof to the proper side ofthe stack during movement of the engine so that the sparks willstrikethereagainst and thusbe prevented from es japing and probablycausing fire or other damage.

Another object is to construct the spark arrester in such a mariner-thatit will be readily positioned upon the end of the stack and freelyrotate thereon.

. A further obie'ct is to provide a spark ar rester of'this typein'combination with a trap and discharge pipe to be-secured around thestack adjacent the/ end thereof to receive the Sparka'cin derS-iand soforth from the spark arrester and properly discharge the same. V

A still further object is to generally improve the construction andincrease the efdevices of this character and produce a spark arresterand trap which may be readily positioned iipon the smoke stacks nowingeneral use at the minimuincost.

With the above and other objects in view, our invention will be morefully described illustrated in the accompanying drawings, which show apreferred embodiment of our device and then specifically pointed out inthe claim which is attached to and forms a part of this specification.

In the drawings z-Bigure 1 is an elevational view of the complete deviceapplied to at smoke stack of conventional form, Fig. 2 is-a verticallongitudinal section on the line 2-2 of 1. Fig. 3 is a horizontal section on the line 33 of Fig. 2. Fig. at is a detail perspective view ofthe lower portion ofthe spark arrester. Fig. 5 is a detail View of theremovable ring'for the upper edge of the smoke stack; Fig. 6 is a detailview of the removable trap for engagement around the smoke stack;

:Referring more specifically to the drawings, in which similar"reference numerals designate corresponding parts throughout, 1.0designates the smoke-stack having the beaded. upper end 11 around which.the sec tional ring 12 is engaged, the sections of said ring beinghinged together as shown at 13.

()ne of said sections carries the tongue lat at itsfree end forengagement between the up per and lower flanges 15 of the oppositesection and the pin i6 is passed through the flanges 15 and the tongue 11 to securely lock t-hering upon the flange ll. It will be understoodthat each section of thering 12 carries inwardly directed flanges 15,previously mentioned, for engagement above and below the-outwardlybeaded upper end 11 of the smoke stack 10. It will also be understoodthat the end 1 of the section within which the tongue 14 is receivedbetween the flanges 15, is bifurcated as shown at 15.

When the sections of the ring 12 are properly clamped around the beadedend 11 of the stack 10 the said ring forms a track upon which the sparkarrester rotates, as will now .be described.

The spark arrester comprises a lower band 17 an upper band 18 held-inproper spaced relationby means of thefluprights 19, and secured to thebands 17 and.

18 and the uprights 19 is the screen 20 which is bent into substantiallysemicircular form in cross section, the vertical edges thereof beingparallel and at substantially principally i diametrically oppositepoints. The screen .top member 21 is secured upon the upper ring 18completely coveringthe latter; The

vane 22 carries the reduced extension 23 which is bent around the ring18 and secured thereto with the extremity of said extension securelyfastened to the vane 22, as shown at 24, thus securely fastening thevane to the upper end of the spark arrester. The edge of the screen top.member 21 is preferably securely held against the upper ring 18 and theextension ring 23. The screen 20 is also preferably secured to the innerfaces of the rin s 17 and 18 and the uprights 19 as willclearly'seenupon the drawings.

I preferably braced Projecting inwardly from the inner face of the lowerring 17 is a series of stub shafts 25 carrying the upper rollers 26 forengagement upon the upper face of the ring 12 and a similarseries,of-stub shafts 27 is positioned below the series 25, said lowerstub shafts 27 carrying the rollers 28 for engagementagainst the underface of'the ring 12, thus properly supporting the spark arrestcr forfree rotary movement around the smoke stack 10. Secured to the innerface of the band 17 are the brackets 29 having the upper and lower arms30 and 31 respectively bctw'een' which are mounted thevcriical spacingrollers 32 which are positioned between the rollers 26 and the rollers28 and engage against the periphery of the ring 12 to properly retainthe band 17 in spaced relation to the ring'12.

Positioned around the stack 10 a sho t distance from the upper beadedend 1 thereof is the trap 33, the verticaledge of which is slightlyoutwardly of the vertical.

edge of the band 17 as the diameter of the trap is greater than thediameter of.the band 17. The trap 33 has a slanting bottom 34 which isprovided with a suitable central opening to accommodate the smoke stack10 and at the lowest portion of the bottom 34 of said trap, the upperendof a suitable discharge pipe 35 is secured. The trap- 33 is by means ofthe strap 36 having one end .ecur'ed thereto at a point opposite theconnection 'of the discharge pipe 35 therewith, while the opposite endof said strap is secured to the engine body. It will also be evidentthat the discharge pipe may extend to any desired point and may beprovided with a suitable valve 37 for normally closing the lower endthereof.

From the foregoing it will be evident that we have provided a sparkarrcster which will be of extremely simple form and construction andwhich will, by action of the air currents upon the vane 22 be properlyrotated upon the upper end of said smoke stack, the construction of thering 12 and'the rollers 26, 28 and 32, assuring proper and free rotationof the spark arrester, it will also beapparent that as the sparkarrester pi e 35 may of rollers extending esca in from the u er end ofthe smoke P 2' PP stack 10 will be directed against the screen topmember 21 and that the cinders will fall between the ring 12 and band 17into the trap 33 from which they will gradually enter the discharge pipe35. The discharge be emptied of its contents, enever desired by simplyopening the valve at the lower end thereof.

While we have shown and described the preferred form of our device, itwill be un derstood that minor changes in the details of constructionmay be made within the scope of the claim without in the slightestdegree departing from the spirit of our invention.

What we claim is:

In a rotatable spark arrester, the combination with a smoke-stack havinga beaded upper end of a track-ring having a continuous groove in itsinner periphery, said ring being detachably secured to the end of thesmoke-stack, the bead of the stack engaging in the groove and holdingthe ring in position, a body member including upper and lower bands,uprights connecting said bands, a foraminous cover for the upper band, asemicylindrical foraminous member secured to the bands and to theuprights, pairs from the inner eriphery of the lower band, the axes oftile said rollers disposed in a horizontal plane, a

of rollers carried by the inner plurality of the band and having theiraxes periphery vertically disposed, the vertically disposed rollersengaging the outer periphery of the track-ring and the horizontallydisposed rollers engaging'the upper and lower faces of said rings torotata member, and. a trap body member. w In testimony whereof, we afiixour tures, in presence of two witnesses.

FRANK E. YOUNG. CHARLIE A. BRAG(1.' Witnesses: V I

SWOEN LIND, W. B. ABRAHAMsoN.

1 support the b 'j' y disposed below said signa- I N i I K Copies ofthis. patent may be obtained for live cents each, by addressing the"Commissioner of Patents,

' Washington, D. 0.

